Omron Programmable Terminals NT631 Setup Manual page 225

System Maintenance
Reference:
Checking the Battery
Voltage
208
To end the check, press the touch switch at the top right corner (NT631: dis-
played in reverse video; NT631C: displayed in yellow). The NT631/NT631C
will return to the DEVICE CHECK MENU.
• The host is not notified of the operation of touch switches pressed during
the I/O check.
• The check cannot be performed until the touch switch at the top right cor-
ner is displayed in reverse video (for NT631) or displayed in yellow
(NT631C). Start the check after the status of the touch switch at the top
right corner has changed.
Check the voltage of the NT631/NT631C's built-in battery by following the
menu operation from the System Menu shown below.
Ver 4.12
Select Maintenance Mode.
Select I/O Check.
Select Device Check.
Select Battery.
Section 6-11